linux/sound
Hans de Goede 8e7a1f1f17
ASoC: rt5640: Remove is_sys_clk_from_pll, it has ordering issues
is_sys_clk_from_pll() is used as a snd_soc_dapm_route.connected callback,
checking RT5640_GBL_CLK to determine if the sys-clk is PLL1 and thus the
PWR_PLL bit in reg PWR_ANLG2 must be set.

RT5640_GBL_CLK is changed by rt5640_set_dai_sysclk(), which gets called by
the pre_pmu / post_pmd functions of the "Platform Clock" dapm-supply.

This creates an ordering issue, during a dapm transition first all
connected() callbacks are called to build a list of supplies to enable
and then the complete list is walked to enable the supplies. Since the
connected() check happens before enabling any supplies,
is_sys_clk_from_pll() ends up deciding if the PWR_PLL bit should be set
based on the state the "Platform Clock" supply had *before* the transition.
This sometimes results in PWR_PLL being off, even though *after* the
transition PLL1 is configured as sys-clk.

This commit removes is_sys_clk_from_pll() instead simply setting / clearing
PWR_PLL in rt5640_set_dai_sysclk() based on the selected sys-clk, which
fixes this and as a bonus results in a nice cleanup.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-05-11 11:21:42 +09:00
..
ac97 ALSA: ac97: kconfig: Remove select of undefined symbol AC97 2018-02-12 08:16:39 +01:00
aoa
arm
atmel
core ALSA: pcm: Remove WARN_ON() at snd_pcm_hw_params() error 2018-04-09 17:39:31 +02:00
drivers ALSA: aloop: Mark paused device as inactive 2018-03-27 08:00:28 +02:00
firewire treewide: remove large struct-pass-by-value from tracepoint arguments 2018-03-28 22:55:18 +02:00
hda ALSA: hda: Copying sync power state helper to core 2018-02-12 13:59:39 +01:00
i2c ASoC: Updates for v4.15 2017-11-13 15:45:57 +01:00
isa ALSA: gus: Delete an error message for a failed memory allocation in snd_gf1_dma_transfer_block() 2017-11-29 09:29:36 +01:00
mips ALSA: sgio2audio: Improve a size determination in snd_sgio2audio_create() 2017-11-29 09:29:31 +01:00
oss vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
parisc
pci amdgpu, omap and snd regression fix 2018-04-12 20:56:10 -07:00
pcmcia
ppc
sh
soc ASoC: rt5640: Remove is_sys_clk_from_pll, it has ordering issues 2018-05-11 11:21:42 +09:00
sparc
spi
synth ASoC: Updates for v4.15 2017-11-13 15:45:57 +01:00
usb ALSA: usb-audio: Add sanity checks in UAC3 clock parsers 2018-04-07 13:07:17 +02:00
x86 ALSA: x86: Fix potential crash at error path 2018-02-28 08:46:00 +01:00
ac97_bus.c
Kconfig ASoC: Updates for v4.15 2017-11-13 15:45:57 +01:00
last.c
Makefile ASoC: Updates for v4.15 2017-11-13 15:45:57 +01:00
sound_core.c sound: Remove leftover msnd init declarations 2018-01-11 17:10:34 +01:00